78 lines
1.5 KiB
C++
78 lines
1.5 KiB
C++
#include "solvespace.h"
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// A public-domain Hershey vector font ("Simplex").
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#include "font.table"
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static bool ColorLocked;
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void glxWriteText(char *str)
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{
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double scale = 0.5/SS.GW.scale;
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int xo = 5;
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int yo = 5;
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for(; *str; str++) {
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int c = *str;
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if(c < 32 || c > 126) c = 32;
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c -= 32;
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glBegin(GL_LINE_STRIP);
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int j;
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for(j = 0; j < Font[c].points; j++) {
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int x = Font[c].coord[j*2];
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int y = Font[c].coord[j*2+1];
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if(x == PEN_UP && y == PEN_UP) {
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glEnd();
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glBegin(GL_LINE_STRIP);
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} else {
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glVertex3d((xo + x)*scale, (yo + y)*scale, 0);
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}
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}
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glEnd();
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xo += Font[c].width;
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}
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}
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void glxVertex3v(Vector u)
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{
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glVertex3f((GLfloat)u.x, (GLfloat)u.y, (GLfloat)u.z);
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}
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void glxTranslatev(Vector u)
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{
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glTranslated((GLdouble)u.x, (GLdouble)u.y, (GLdouble)u.z);
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}
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void glxOntoCsys(Vector u, Vector v)
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{
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double mat[16];
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Vector n = u.Cross(v);
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MakeMatrix(mat, u.x, v.x, n.x, 0,
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u.y, v.y, n.y, 0,
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u.z, v.z, n.z, 0,
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0, 0, 0, 1);
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glMultMatrixd(mat);
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}
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void glxLockColorTo(double r, double g, double b)
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{
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ColorLocked = false;
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glxColor(r, g, b);
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ColorLocked = true;
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}
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void glxUnlockColor(void)
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{
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ColorLocked = false;
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}
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void glxColor(double r, double g, double b)
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{
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if(!ColorLocked) {
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glColor3f((GLfloat)r, (GLfloat)g, (GLfloat)b);
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}
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}
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